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241.
The cued task-switching paradigm is often used to study cognitive control. In this paradigm, people are generally slower and
make more errors when switching tasks as compared with repeating the same task. When two cues are mapped to each task, these
switch costs could result from a mixture of cue-switch effects (which are thought to reflect cue encoding) and task-switch
effects (which are thought to reflect task set preparation). In the behavioral literature, there has been a lively debate
on the degree to which cue-switch effects and task-switch effects indeed reflect different phenomena. In the present study,
we used fMRI to examine whether and to what extent the neural network underlying task-switch effects is also involved in cue-switch
effects. We found task-switch but no cue-switch effects in the frequently observed preparation-related activation in fronto-parietal
areas. These results suggest that the fronto-parietal areas displaying preparatory activity in task-switching paradigms are
engaged in task preparation but not in cue encoding and that task preparation and cue encoding rely on completely different
processes. 相似文献
242.
van den Hout MA Engelhard IM Rijkeboer MM Koekebakker J Hornsveld H Leer A Toffolo MB Akse N 《Behaviour research and therapy》2011,(2):92-98
Posttraumatic stress disorder (PTSD) is effectively treated with eye movement desensitization and reprocessing (EMDR) with patients making eye movements during recall of traumatic memories. Many therapists have replaced eye movements with bilateral beeps, but there are no data on the effects of beeps. Experimental studies suggest that eye movements may be beneficial because they tax working memory, especially the central executive component, but the presence/degree of taxation has not been assessed directly. Using discrimination Reaction Time (RT) tasks, we found that eye movements slow down RTs to auditive cues (experiment I), but binaural beeps do not slow down RTs to visual cues (experiment II). In an arguably more sensitive “Random Interval Repetition” task using tactile stimulation, working memory taxation of beeps and eye movements were directly compared. RTs slowed down during beeps, but the effects were much stronger for eye movements (experiment III). The same pattern was observed in a memory experiment with healthy volunteers (experiment IV): vividness of negative memories was reduced after both beeps and eye movements, but effects were larger for eye movements. Findings support a working memory account of EMDR and suggest that effects of beeps on negative memories are inferior to those of eye movements. 相似文献
243.
Vujanovic AA Bonn-Miller MO Potter CM Marshall EC Zvolensky MJ 《Journal of psychopathology and behavioral assessment》2011,33(1):129-135
The present investigation examined the incremental associations between distress tolerance, or the perceived capacity to tolerate
emotional distress, and global posttraumatic stress symptom severity as well as symptom cluster severity, beyond the variance
accounted for by number of trauma exposure types and negative affectivity. The sample consisted of 140 adults (72 women; M
age = 25.9, SD = 11.1) who endorsed exposure to traumatic life events, as defined by posttraumatic stress disorder diagnostic criterion
A (American Psychiatric Association 2000). Participants did not meet diagnostic criteria for current axis I psychopathology. Distress tolerance demonstrated significant
incremental associations with global posttraumatic stress symptom severity (p < .01) as well as re-experiencing (p < .05), avoidance (p = .05), and hyperarousal (p < .001) symptom cluster severity. Given the cross-sectional study design, causation cannot be inferred. Theoretical implications
and future directions for better understanding associations between distress tolerance and posttraumatic stress are discussed. 相似文献
244.
Van Zalk MH Branje SJ Denissen J Van Aken MA Meeus WH 《Personality & social psychology bulletin》2011,37(9):1202-1215
The current study aimed to provide more insight into the role of online chatting in young adults' emotional adjustment. A model was tested that takes into account (a) extraversion of individuals who communicate online, (b) the kind of peers these individuals communicate with online (i.e., online-exclusive peers vs. friends), and (c) the extent to which effects of online chatting on emotional adjustment are mediated by individuals' ability to provide support to others. Young adults (age M = 18.9) filled out questionnaires about themselves and their fellow students at three measurements with a 4-month interval. Results showed that only for less extraverted individuals, chatting with peers found exclusively online directly predicted higher self-esteem and indirectly predicted less depressive symptoms through increases in supportiveness. Thus, results supported a model of social compensation where effects of online chatting with online-exclusive peers improved young adults' emotional adjustment. 相似文献
245.
Four studies tested the hypothesis that the emotion of benign envy, but not the emotions of admiration or malicious envy, motivates people to improve themselves. Studies 1 to 3 found that only benign envy was related to the motivation to study more (Study 1) and to actual performance on the Remote Associates Task (which measures intelligence and creativity; Studies 2 and 3). Study 4 found that an upward social comparison triggered benign envy and subsequent better performance only when people thought self-improvement was attainable. When participants thought self-improvement was hard, an upward social comparison led to more admiration and no motivation to do better. Implications of these findings for theories of social emotions such as envy, social comparisons, and for understanding the influence of role models are discussed. 相似文献
246.
Guillaume Durand 《Journal of personality assessment》2019,101(2):140-149
Although the term psychopathy is embedded with negativity, evidence points to the existence of another form of psychopathy, which involves adaptive traits such as stress and anxiety immunity, remarkable social skills, noteworthy leadership ability, and an absence of fear. The newly developed Durand Adaptive Psychopathic Traits Questionnaire (DAPTQ) aims to assess adaptive traits known to correlate with the psychopathic personality. Validation of the questionnaire among 765 individuals from the community gave support to a 9-factor solution: Leadership, Logical Thinking, Composure, Creativity, Fearlessness, Money Smart, Focus, Extroversion, and Management. The DAPTQ and its 9 subscales demonstrated good internal consistency reliability in a community sample (.68–.88). Convergent validity and divergent validity were supported by administering the DAPTQ alongside established measures of the psychopathic personality. Overall, these findings support the potential of the DAPTQ as an instrument for measuring psychopathy-associated adaptive traits. Limitations of this study and potential directions for future research are also discussed. Further studies are needed to validate the DAPTQ and its subscales against a wider range of personality traits and behaviors. 相似文献
247.
248.
Acquired epileptiform aphasia (AEA) is characterized by deterioration in language in childhood associated with seizures or epileptiform electroencephalographic abnormalities. Despite an extensive literature, discrepancies and contradictions surround its definition and nosological boundaries. This paper reviews current conceptions of AEA and highlights variations in the aphasic disturbance, age of onset, epileptiform EEG abnormalities, temporal course, and long-term outcome. We suggest that AEA, rather than being a discrete entity, is comprised of multiple variants that have in common the features of language regression and epileptiform changes on EEG. Viewed this way, we argue that AEA can be conceptualized on a spectrum with other epileptiform neurocognitive disorders that may share pathophysiological features. The implications of this viewpoint are discussed, with emphasis on parallels between the AEA variants and regressive autistic spectrum disorders. 相似文献
249.
How the brain processes causal inferences in text 总被引:5,自引:0,他引:5
Abstract— Theoretical models of text processing, such as the construction-integration framework, pose fundamental questions about causal inference making that are not easily addressed by behavioral studies. In particular, a common result is that causal relatedness has a different effect on text reading times than on memory for the text: Whereas reading times increase linearly as causal relatedness decreases, memory for the text is best for events that are related by a moderate degree of causal relatedness and is poorer for events with low and high relatedness. Our functional magnetic resonance imaging study of the processing of two-sentence passages that varied in their degree of causal relatedness suggests that the inference process can be analyzed into two components, generation and integration, that are subserved by two large-scale cortical networks (a reasoning system in dorsolateral prefrontal cortex and the right-hemisphere language areas). These two cortical networks, which are distinguishable from the classical left-hemisphere language areas, approximately correspond to the two functional relations observed in the behavioral results. 相似文献
250.
The reactions of 58 infants to expectancy violation by digitally filtering the experimenter's voice were studied in a cross-sectional design for ages 5, 7, 9, 11-12, and 14 months. The results show that behavioral freezing and changes in gaze direction, but not facial or vocal expression, are reliable responses to expectancy violation. The pattern suggests that a transition in the infant's capacity for cognitive evaluation of novel and discrepant events may occur around age 9 months. These findings confirm the consistent failure to find prototypical facial surprise reactions in research on novel or impossible situations. Componential theories of emotion, which predict adaptive behavior patterns from appraisal processes, may provide clues for underlying mechanisms and generate hypotheses on age-related changes in emotional expression. 相似文献